noaa-ocean-10430
Arabian Sea MD04-2881 750KYr Paleoproductivity Data
Ziegler, M.; Lourens, L.J.; Tuenter, E.; Reichart, G.J.
Arabian Sea MD04-2881 750KYr Paleoproductivity Data
2010-05-03
NCDC-Paleoclimatology
ONLINE Files
Pending
https://www.ncdc.noaa.gov/paleo/study/10430
Investigator
M.
Ziegler
Investigator
L.J.
Lourens
Investigator
E.
Tuenter
Investigator
G.J.
Reichart
earth science
paleoclimate
paleoceanography
barium,sediment,null,count per second,null,paleoceanography,null,x-ray fluorescence spectroscopy,N,null
earth science
paleoclimate
paleoceanography
age,null,null,calendar kiloyear before present,null,paleoceanography,null,null,N,null
earth science
paleoclimate
paleoceanography
delta 18O,Uvigerina peregrina,null,per mil PDB,null,paleoceanography,null,null,N,null
earth science
paleoclimate
paleoceanography
delta 18O,Neogloboquadrina dutertrei,null,per mil PDB,null,paleoceanography,null,null,N,null
earth science
paleoclimate
paleoceanography
Globorotalia truncatulinoides,sediment,null,count per gram,null,paleoceanography,null,null,N,150-600 um fraction
earth science
paleoclimate
paleoceanography
glauconite,sediment,null,count per gram,null,paleoceanography,null,null,N,green grains most commonly glauconite
earth science
paleoclimate
paleoceanography
Globigerinoides ruber,sediment,null,microgram,null,paleoceanography,null,null,N,size normalized
earth science
paleoclimate
paleoceanography
titanium/aluminum,sediment,null,dimensionless,null,paleoceanography,null,null,N,null
earth science
paleoclimate
paleoceanography
magnetic susceptibility,sediment,null,cubic meter per kilogram,null,paleoceanography,null,null,N,x10-6 units
earth science
paleoclimate
paleoceanography
bromine,sediment,null,count per second,null,paleoceanography,null,x-ray fluorescence spectroscopy,N,null
earth science
paleoclimate
paleoceanography
Globorotalia crassaformis,sediment,null,count per gram,null,paleoceanography,null,null,N,150-600 um fraction
earth science
paleoclimate
paleoceanography
depth,null,null,centimeter,null,paleoceanography,null,null,N,null
earth science
paleoclimate
paleoceanography
delta 18O,Globigerinoides ruber,null,per mil PDB,null,paleoceanography,null,null,N,null
earth science
paleoclimate
paleocean
geochemistry
earth science
paleoclimate
paleocean
oxygen isotopes
geoscientificInformation
Monsoon
762750 cal yr BP
8250 cal yr BP
Complete
22.2014
22.2014
63.0847
63.0847
-2387
-2387
Ocean
Indian Ocean
Arabian Sea
MD04-2881>LATITUDE 22.2014>LONGITUDE 63.0847
None
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English
DOC/NOAA/NESDIS/NCEI
National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
https://www.ncdc.noaa.gov/data-access/paleoclimatology-data
DATA Center Contact
Bruce
Bauer
bruce.a.bauer@noaa.gov
paleo@noaa.gov
303-497-6280
303-497-6513
325 Broadway, E/NE31
Boulder
CO
80305-3328
USA
online
ASCII
Ziegler, M., L.J. Lourens, E. Tuenter, and G.-J. Reichart. 2010.
High Arabian Sea productivity conditions during MIS 13 - odd monsoon
event or intensified overturning circulation at the end of the
Mid-Pleistocene transition?
Clim. Past, 6, 63-76, doi:10.5194/cp-6-63-2010.
Marine isotope stage (MIS) 13 (~500 000 years ago) has been recognized
as atypical in many paleoclimate records and, in particular, it has
been connected to an exceptionally strong summer monsoon throughout
the Northern Hemisphere. Here, we present a multi-proxy study of a
sediment core taken from the Murray Ridge at an intermediate water
depth in the northern Arabian Sea that covers the last 750 000 years.
Our results indicate that primary productivity conditions were
anomalously high during MIS 13 in the Arabian Sea and led to extreme
carbonate dissolution and glauconitization in the deep-sea sediments.
These observations could be explained by increased wind driven upwelling
of nutrient-rich deep waters and, hence, by the occurrence of an
exceptionally strong summer monsoon event during MIS 13, as it was
suggested in earlier studies. However, ice core records from Antarctica
demonstrate that atmospheric methane concentrations, which are linked to
the extent of tropical wetlands, were relatively low during this period.
This constitutes a strong argument against an extremely enhanced global
monsoon circulation during MIS 13 which, moreover, is in contrast with
results of transient climate modelling experiments. As an alternative
solution for the aberrant conditions in the Arabian Sea record,
we propose that the high primary productivity was probably related to
the onset of an intensive meridional overturning circulation in the
Atlantic Ocean at the end of the Mid-Pleistocene transition.
This may have led to an increased supply of nutrient-rich deep waters
into the Indian Ocean euphotic zone, thereby triggering the observed
productivity maximum.
STUDY NOTES: Multiproxy geochemical record of Arabian Sea primary productivity
from Murray Ridge core MD04-2881.
Age estimates are based on tuning the benthic oxygen isotope
record to the global LR04 isotope stack
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/ziegler2010/ziegler2010.xls
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/ziegler2010/ziegler2010.txt
USA/NOAA
DIF
Version 9.8.4
2019-01-30
2019-01-30